Meghan McCain, "The View" panelist and daughter of Sen. John McCain, also spoke out, saying, "This is so horrible, even by Lewandowski standards."

We must always arrest people coming into our Country illegally. Of the 12,000 children, 10,000 are being sent by their parents on a very dangerous trip, and only 2000 are with their parents, many of whom have tried to enter our Country illegally on numerous occasions.

Anger at Lewandowski comes as more and more in Hollywood, Washington and America in general are slamming the Trump administration's "zero-tolerance" policy to arrest undocumented immigrants at the border and separate them from their children.

"We must always arrest people coming into our Country illegally," Trump tweeted amid mounting calls to end the policy Tuesday. "Of the 12,000 children, 10,000 are being sent by their parents on a very dangerous trip, and only 2,000 are with their parents, many of whom have tried to enter our Country illegally on numerous occasions."

As CNN notes, Lewandowski refused to retract his statement when asked about an apology on another Fox News spot Wednesday.

"An apology? I owe an apology to the children whose parents are putting them in a position that is forcing them to be separated. We owe an apology to Jamiel Shaw and Brian Terry and Kate Steinle's family who have allowed those individuals to be killed by illegal aliens," Lewandowski said in reference to several slain Americans. "The American people owe an apology to those people. When you cross the border illegally, you have committed a crime and there is accountability for committing crimes and there should be."